l learned to sew on one like that
They are beautifully balanced machines, unlike the majority of modern ones.
They need cleaned often, because oos builds up....it's a kind of felt from tiny, tiny fibres of the fabric and thread. It's worth doing it because it stops the bobbin and feeddogs from running smoothly.
They also need oiled ....the oiling ports are quite obvious....fairly often.
They also sew better when they're slightly warm. It's worthwhile setting up a standard lamp where it will shine down on it, even if modern led lights are often more useful to position.
New drive belts are fairly easy to come by. Loads of them on eBay. Measure carefully and write the number down and keep it to hand in one of the drawers.
Similarly the bobbins.
Buy decent needles. Modern Singer ones are made in China like most others. Schmetz ones however aren't and are worth the price difference. Buy a big pack for economy if the machine is going to be used often. I buy packs of 50 or 100 and it really does drop the price per needles, and since I have spares I don't end up frustrated trying to use a needle that really ought to have been put in the Dead Sharps tin.
There are masses of spare parts available for such machines, and loads of different feet and stitch guides.
To be honest I'd get used to sewing with it first before even thinking about buying other parts.
The feed dogs on the old machines are quite dainty things. They are very good for accuracy, but it's worth learning to use a snippet when sewing. Basically it's a tiny scrap of fabric ( an inch square works fine) that takes the first stitches and lets the rest of the fabric sew smoothly, another is added at the end of the seam and left under the presser foot to start the next one. It becomes just the way you use the machine, and it saves such an amount of thread. It's an old fashioned trick that's making a comeback because so many modern machines snag the fabric and stuff the beginning down into the feeddogs instead of letting it through smoothly.
When that machine was made folks didn't waste thread, so using the snippets was common.
Having said all that, there are loads of folks on here who restore these old machines and I'm sure they'll have much better advice about that than I can offer.
Have fun
M